Extreme rainfall events over the Himalayas between 1871 and 2007

Currently there is much discussion regarding the impact of climate change and the vagaries of the weather, in particular extreme weather events. The Himalayas form the main natural water resource of the major river systems of the Indian region. We present a brief review of the available information...

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Bibliographic Details
Published in:Hydrological sciences journal 2011-08, Vol.56 (6), p.930-945
Main Authors: Nandargi, S, Dhar, O. N
Format: Article
Language:English
Subjects:
changement climatique
climate change
decadal variation of rainfall
Earth sciences
Earth, ocean, space
Environmental management
Environmental protection
Exact sciences and technology
extreme one-day rainfall
Himalaya
Himalayas
Hydrology. Hydrogeology
précipitation journalière extrême
Rain
rivers
Surface water
sustainable development
variation décennale de la pluie
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Summary:Currently there is much discussion regarding the impact of climate change and the vagaries of the weather, in particular extreme weather events. The Himalayas form the main natural water resource of the major river systems of the Indian region. We present a brief review of the available information and data for extreme rainfall events that were experienced in different sectors of the Himalayas during the last 137 years (1871–2007). Across the entire Himalayas, from east to west, there are now 822 rainfall stations. There was an increase in the rainfall station network from 1947 onwards, especially in the Nepal and Bhutan Himalayas. Extreme one-day rainfall has been picked out for each station irrespective of the period for which data are available. The decadal distribution of these extreme one-day rainfalls shows that there is a considerable increase in the frequencies during the decades 1951–1960 to 1991–2000, whereas there is a sudden decrease in the frequencies in the present decade during 2001–2007, indicating the need to understand the response of the systems to global change and the associated physical and climatological changes. This is essential in terms of preserving this natural resource and to encourage environmental management and sustainable development of mountain regions.Citation Nandargi, S. & Dhar, O. N. (2011) Extreme rainfall events over the Himalayas between 1871 and 2007. Hydrol. Sci. J.56(6), 930–945.
ISSN:2150-3435
0262-6667
2150-3435
DOI:10.1080/02626667.2011.595373